text: from floodsystem.flood import stations_highest_rel_level
  from floodsystem.stationdata import build_station_list, update_water_levels
  
  def test_list_characteristics():
      stations = build_station_list()
      update_water_levels(stations)
  
      for n in range (1, 15):
          assert len(stations_highest_rel_level(stations, n)) == n
          assert type(stations_highest_rel_level(stations, n)) == list
          assert type((stations_highest_rel_level(stations, n))[n-1]) == tuple
          assert type((stations_highest_rel_level(stations, n)[n-1])[0]) == str
          assert type((stations_highest_rel_level(stations, n)[n-1])[1]) == float
      
  